5 5 8 11 and 5 6 9 13 count as 24

5 5 8 11 and 5 6 9 13 count as 24


5*8-5-11=24
(13-5)*(9-6)=24



A simple calculation method of 4.25 △ 2.5 × 9.9 + 0.17


4.25÷2.5×9.9+0.17
=1.7×9.9+0.17
=1.7×9.9+0.1×1.7
=1.7×(9.9+0.1)
=1.7×10
=17



9.05-2.63.4 how to simplify calculation


9.05-2.6-3.4=9.05-(2.6+3.4)=9.05-6=3.05